In Tokyo, my friends and I also looked for Anego's shooting locations ^-^
We went to Hibiya and walked a lot that day. We walked to this old Station, where there was a Cherry tree and where Kurosawa asked Naoko if he could call her Anego.
Nowadays, it's being renovated and there's no tree >_< but the building was there and it was a beautiful building.
We also went to the street where Kurosawa ran while shouting "Anego!" and hugged Naoko when he reached her (then they got in a taxi and slept together at her place >o<) We found the street but we couldn't find the exact place where they hugged because the shops on the street changed so we had no placemark.
Then we went to the fountain where Kurosawa kissed Anego in episode 2 (I was really happy to find it because I did all the research by myself for this one xD) It's a really nice fountain. I suddenly had the feeling of being in Anego's universe ^-^
That's it for Anego. I know a few other locations for this drama but they are farther from Tokyo.